Many of the young jobless men in the Casbah had been transported to the sit-in by the Tunisian General Union of Labor, the country's main labor federation.
Savas Robolis, a member of the main labor union, the Greek General Confederation of Labor, who serves on a government committee on pension reform, called the pension situation a "time bomb".
The main Labor Day event was at the Merrill, Wisconsin, fairgrounds.
And France's main labor union wasted no time in weighing in.
That proposal has already prompted Spain's main labor unions to call a strike next month.
The main labor union representing Toyota's workers is in no position to raise a fuss.
The main labor federations have taken sharply different positions on the bill.
The head of the country's main labor union, with more than two million members, has gone further.
The action was called by the country's two main labor unions, which represent about 2.5 million workers.
On Wednesday, Greece's two main labor unions called 24-hour general strikes for Oct. 5 and 19.
The moves are a prelude to a general strike called by the country's main labor unions for Sept. 26.
